Fire-extinguisher.



J. BIJUR & J. M. JOY.

PIRE EXTINGUISHBR.

APPLICATION FILED NOV. 12, 1910.

Patented J al1. 30, 1912.

2 SHEETS-SHEET 1.

lllllpillll J. BJJUR JJ J. M. JOY. FIRE EXTINGUISHBB..

APPLIGATION FILED NOV. 12, 1910.

1,015,987, Patented Jan. 30, 1912.`

, 2 SHEETS-SHEET z.

UNITED STATES; PATENT onirica.

lJOSEPH BIJ'UR, OF NEW YORK, N. Y., AND JOHN M. JOY, 0F BOONTON, NEW JERSEY, ASSIGNOBS T0 THE DURAFORT COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.'

FIRE-IEXTINGUISHER.

Specification of Letters Patent.

Patented Jan.'eo,1912.

Application led November 12, 1910. Serial No. 592,010.

To all whom t may concern Be it known that we, JOSEPH BIJUR, residence and post-oiice address 163 West Seventy-fourth street, New York city, New York, and JOHN M. JOY, residence and post-oiiice address Boonton, New Jersey, both citizens of the United States, have invented certain new and' useful Improvements in Fire-Extinguishers, nof which the following is a specification, accompanied by drawings.

The invention was designed particularly for fire extinguishers having a case containing water or other extinguishing uid and a compressed gas container or capsule from which the gas is released, to cause pressure on the liquid, by perforating a seal and opening the valve of the capsule; but it will be seen that the invention is not limited to this particular use.

The object of the invention is to improve the construction and operation of the apparatus.

In the accompanying drawings the most complete and perfect form of the invention known to us is illustrated, but it will be seen that some features lof' the invention may be used without others and a considerable modication is permissible without departing from the spirit of the invention.

-In the drawings, Figure 1 is a cross section of the ire extinguisher embodying the invention. Fig. 2 is a side elevation of the upper portion thereof partly broken away to show some details. 3 is a plan view of certain details. Figs. 4 and 5 are two views at right angles ofthe plunger.

At 10 is the main tank, container, or casing of the extinguisher, which is preferably of sheet metal provided with a screwthreaded collar 11. The metal of the tank is rolled andy expanded over the inner edge of the collar, as at 11" and also preferably indented at' several points, a's at 11. It will be seen that the gas pressure tends to hold this joint tight. The collar is screwthreaded externally to lit the cover 13 and is machine-finished at its upper face to titl tightly against the washer 13 of the screw cover 13 of the apparatus. At 12 is the external hose connection of the extinguisher.

The seal perforating plunger is operated by a cam and cam lever preferably conceive a stud 15 upon which the cam turnsand is recessed so as to inclose the cam and plunger and protect them, as at 16. The plunger lever 18 swings .through anangle of one hundred and eighty degrees from the' position shown in full to that shown in dotted lines in Fig. 2. It is forked and has a double bearing on the-stud 15. One part 19 turns upon the neck .of the stud; the other part 20 is enlarged to form a, disk which supplements the housin 14 invinclosing the cam and plunger and as a bearing on the inner end of the stud 15. The cam 22 is pinned to the inner face of the member 20 of the leverV and lies within the recess of the-housing 14, as shown. It is preferably heart-shaped and designed tohold the plunger in its highest position and its extreme lowest position at the two positions of theupward pressure on the plunger does not tend to turn the cam and allow the plunger to move upward from its lowest position. The uppermost position of the cam '22 is shown by a line of dashes in Fig. 2 and the lowermost position by a line of fine dots.

-Y The plunger 24 is of the shape best seen in Figs. 4 and 5. It is laterally recessed to receive and coperate with the cam 22 which acts against the shoulders 25, 26. 'It is also slotted at 27 to allow the stud 15 to 'pass through it without interfering with its motions. It extends downward through the housing 14 and is guided thereby and is surrounded and packed gas-tight by the glandl and stufing-box, as shown in Fig. l. Its extreme lowerendis provided with a piercing tip 28 and is reduced somewhat above this in order to allow the gas toescape freely through the perforation `after the piercing tip has perforated the seal.

The capsule or cartridge 30 for the compressed carbonic vacid gas or other gas has. a neck provided with projecting studs` or pins 31 by which it is secured `with a loose fit to the sleeve 32 which is rigidly secured by screw-threading to the projecting nipple on the under side of the cover 13, as shown. The pins 31 are received in L- shaped or bayonet slots, the shape of one of which is shown in Fig. 2 at 33. The` capsule' sule.

. screwed into the neck, as shown.

is put in place by thrusting the pins along 'the longitudinal portions of the slot and then turning the cartridge to bring the pins into transverse portions of the slot and a spring 35 springs down behind the projecting pin 31 to hold it in the slot, as will be clear from Figs. l and 2. To release the cartridge the spring 35 is raised land then the capsule can be turned and the pin 31 freed from the slots. To facilitate this release the projecting ends of the pins 31 may be rounded so as to present an incline to the spring 35 suflicient to automatically raise .the spring and release the pins when considerable rotary force is applied to the cap- It will be seen that no accidental force but only a twist or rotary movement will release the pins.

The walls of the capsule 30 are preferably a single piece of pressed or drawn steel or twol pieces electrically welded to formons. The neck of the capsule is screw-threaded internally at two points, as shown, to receive respectively the valve sleeve and the seal-holding sleeve. The valve sleeve 40 is At'its lower end it forms the valve seat on which the valve 42 seats in an upward direction. This valve consists of a screw cap holding a rubber valve disk or face 43 on the lower end of the valve stem 44. Valve stem 44 is guided in the sleeve 40. It is preferably laterally cut away or reduced, as shown .in Fig. l, to allow space for the passage of gas. At its upper end it has an angular head 45 beneath which is conned the compression spring 46 which acts to hold up the valve disk 43 against its seat. Above the valve stem and restino' on shoulders in the neck of the capsule 1s a sealing disk 48 which is screwed down and tightly sealed by means of the screw cam 49.

When the extinguisher has been charged and the parts put in place, as shown in the figures, the plunger will be normally in the position shown in Fig. 1 just above the seal 48. To use the extinguisher the lever 18 is turned to the dotted position shown in Fig. 2. This turns the cam to its lowest position, driving down the plunger and causing its lower end 28 to first perforate the seal 48 and then to push down the valve stem 44, opening the valve and allowing the compressed carbonio acid or other gas to escape to the main tank 10. In this position the compression spring 46 and the plunger pressing upward cannot tend to turn the cam but will be locked bythe cam until the lever is moved. By turning back the lever to its normal position the spring 46 will be al-l lowed to act and close the capsule valve stopping the release of gas.

In recharging the screw-cover 13 is removed; capsule 30 withdrawn from the sleeve 32 and a fresh capsule put in place;

1. The combination of the tank, cover,

and capsule, a perforable seal and a valve for the said capsule, a plunger for piercing said seal and operating the valve, a lever and a cam for operating the plunger, said cam being of shape to lock the plunger against endwise motion when holding the valve open.

2. The combination of the tank, cover, and capsule, a perforable seal and a valve for the said capsule, a plunger for piercing said seal and operating the valve, a lever and a cam for operating the plunger, said cam acting within a recess in the said plunger.

3. The combination of the tank, cover therefor, means for securing a capsule to the cover, a plungerguided in the said cover, a cam set within a recess in the said plunger, a lever for operating the cam and a housing on which the lever is pivoted and which protects the said cam.

4. The combination of the tank, cover therefor, a sleeve screw-threaded to said cover, a plunger extending through the said cover and within the sleeve, a stuingbox within the sleeve around 'said plunger, a capsule having laterally projecting pins, and coperating slots in said sleeve, and a spring-retaining device therefor for locking the pins in said slots and securing the capsule to the sleeve. .f

5. An extinguisher having a tank, a cover, a capsule provided with one or more pins with rounded or inclined ends, a sleeve to which the capsule is detachably secured, said sleeve having one or more slots for said pins, and a spring-retaining device for locking the pins in said slots which engages the said inclined end of one of the pins and is thereby adapted to be actuated by said pin under force.

6. An extinguisher having a tank, a cover, a capsule provided with one or more pins with rounded or inclined ends, asleeve to which the capsule is detachably secured, said sleeve having one or more slots for said pins, a spring-retaining device for locking the pins in said slots which engages the said inclined end of one ofthe pins and is thereby adapted to be actuated by said pin under force, andthe said slots extending circumferentially at the portion wherein the pins are retained, whereby rotary motion is necessary to release the pins.

7. An extinguisher having a tank provided with a seal-perforating` plunger, a capsule therefor having a neck integral with its walls, a detachable valve sleeve screw-threaded into said neck and having a valve and valve stem in position to be actuated by the plunger, and a seal seated in and secured to the said neck above the said sleeve and completely inolosing it Within the neck.

8. An extinguisher having a tank providedwith a seal-performing plunger, a capsule therefor having a neck integral with its Walls,v a detachable valve sleeve secured` in said neck, a seal extending across the valve sleeve within said neck and secured 10 therein and sealing the joint between the.

valve sleeve and the `neck as Well as the valve passage. v

In testimony whereof We have signed this specification in the presence of two subseribing Witnesses, Nov. l, 1910.

. JOSEPH BIJUR.

JOHN M. JOY. Witnesses:

E. VAN ZANDT, FRANCIS'A. STANTON. 

